<div class="uploadImg">
  <div class="top">
    <img #image [src]="base64String" class="bigImg">
  </div>
  <div class="bottom">
    <div style="display: flex; align-items: center;">
      <nz-upload [nzBeforeUpload]="beforeUpload" [(nzFileList)]="fileList" class="historyno">
        <button nz-button nzType="primary" nzValue="small"> 上传图片</button>
      </nz-upload>

      <div class="icon">
        <i class="iconfont icon-zoom-in-line" nzTooltipTitle="放大" nz-tooltip nzTooltipPlacement="top" (click)="big()">
        </i>
        <i class="iconfont icon-zoom-out-line" nzTooltipTitle="缩小" nz-tooltip nzTooltipPlacement="top"
          (click)="small()">
        </i>
      </div>

    </div>

    <button nz-button [nzType]="'primary'" (click)="handleUpload()" [nzLoading]="uploading">
      {{ uploading ? '保存中' : '保存' }}
    </button>
  </div>
</div>